I tried Xhenit as you suggested and it did work. I'm not sure how to interpret this though because the documentation with the themes that won't work says they are OTS, and this seems to eliminate the LSTS bug doesn't it? Have you got anymore ideas?

Another question I'd like to include at the moment relates to setting litestep as the shell. When I install omars installer, it unloads explorer and sets litestep (simplicity) as the shell automatically, however when I run litestep.exe after setting it back to explorer it loads the litestep theme overtop of explorer (both are functional). How do I replace explorer, rather than run it simultaneously with litestep?